Based on the recommendations of the Indian Road Congress (IRC) for CBR method of design of pavement. identify the incorrect statement.

CBR tests should be performed on remoulded soils in the laboratory.

In case of new constructions, the CBR test samples may be soaked in water for four days before testing.

In case of existing roads. sample should be compacted to the field density of sub-grade soil (at OMC or at the field moisture content)

At least five samples should be tested on each type of soil at the same density and moisture content.